Toggle your GNOME Terminal window with a keyboard shortcut under Linux.

toggle-terminal.sh

#!/bin/bash

function toggle_terminal () {

	Terminal_Window_ID=`xdotool search --all --onlyvisible --classname gnome-terminal`

	# echo $Terminal_Window_ID

	if [[ -z "$Terminal_Window_ID" ]]
	then
		gnome-terminal --working-directory="/home/$USER"
	else
		Active_Window_ID=`xdotool getactivewindow`

		if [[ "$Terminal_Window_ID" == "$Active_Window_ID" ]]
		then
			xdotool windowminimize ${Terminal_Window_ID}
		else
# Uncomment the following two lines
# if the Terminal is not set to be visible on all Workspaces
#
#			Active_Desktop_ID=`xdotool get_desktop`
#			xdotool set_desktop_for_window ${Terminal_Window_ID} ${Active_Desktop_ID}
#
			xdotool windowraise ${Terminal_Window_ID}
			xdotool windowfocus ${Terminal_Window_ID}
		fi
	fi
}

toggle_terminal